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Patented Mar. 6, 1900.

I. F. WALES.

DRIVE BEARING.

(Application filed 4px. 26. 1899.]

2 smug-sum a.

(No Model.)

Patented Mar. 6, l900.

2 Shanta-Shut 2 I. F. WALES DRIVE GEARING. (Application filed Apr. 26, 1899.)

(No Model.) 7

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UNITED STATES PATENT OFFICE.

IRVING F. \VALES, O1 \VOONSOCKE'I, RIIODE ISLAND.

DRlVE-GEARING.

SPECIFICATION forming part of Letters Patent No. 644,954, dated March 6, 1900.

Application filed April 26,1899.

To all 10. mm (om-My concern-.-

Be it known that I, IRVING F. Warns, a citizen of the United States, residing at Woonsoeket, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in Drive-Gearing, of which the following is a specification.

My invention relates to veloeipcdes, and more particularly to drive-gearing therefor.

It consists in the peculiar construction, novel combination, and adaptation of parts hereinafterdescribed, and part-icul'arl point-- ed out in the claim appended.

In the accompanying drawings, Figure l is a detail side elevation of a portion of a bicycle equipped with my improved gearing. Fig. 2 is a detail section taken in the plane of line 2 2 of Fig. 6. Fig. 3 is a horizontal section taken in the plane of line 3 3 of Fig. 1. Fig. l is a diametrical section of the annular gear. Fig. 5 is aperspoctive view of the gear-case. Fig. 6 is a vertical section taken in the plane of line 6 G of Fig. 2.

In the said drawings similar letters designate corresponding parts in all of the several views, referring to which A is a bottom line run, 13 a rear brace, and C a plate connecting said run and brace and forming part of a bicycle-frame, which may otherwise be of the ordinaryorany approved construction. Said plate 0 is provided in its rear edge with a notel1c1,designed to receive awhe-el-axle b and the usual means for adj ustably fixing the said axle with respect to the frame, and it is also provided with three (more or less) slots 0. 'lheselatterare designed for the reception of bolts (1, which are adjustably fixed to the plate by nuts cand have for their purpose to adjustably connect a gear-case D to the said plate. Thcgcar-case is preferably made up of two sections fg. The section j comprises a vertically-disposcd circular central portion it, having an opening 1 to loosely receive the cupj of an ordinary wheel-hub .l', a marginal flange 1, extending laterally from the central portion 7:, acom paratirely-shallow lateral ilango m, which merges at its ends into the flange a. and is designed to inelosc a pinion 4: on the wheel-hub ii, and a verticallydispoaod annular [hinge into which the flange I merges, as illuntralud. 'iho section Serial No. 714,573. ilio model.)

9 0E the gearuse is in the form of an annulus and is interiorly threaded, as shown, to engage the exterior threads q of the scctionf. At their inner sides the cuse-scction g and the flange p of the section fare provided with ribs r, the purpose of which will be presently explained.

I) is an annular gear which is arranged and adapted to move in the annular space between the side walls 9 and p of the gear-case. This annular gear is provided with an inner longitudinal central rib the inner portion of which is enlarged and equipped with interior teeth a, designed to mesh with the teeth of the pinion 11, and exterior teeth I [or the engagement of a sprocket-chain u or other suitable driving medium. It is also provided with lateral flanges r. These flanges are arranged quite close to the outer edges ol? the ease-section g, so as to exclude dust from the interior of the gear-case, and they are also designed for the engagement of anlifrietion-balls l which are interposed between the annular gear and the ribs 1' and have for their purpose to case the rotary movements of said gear and at the same time hold it against lateral or radial movement or play.

In the practical operation of my improved driving-gear motion is transmitted from the chain 11. to the annular gear E and from the said annular gear to the traveling wheel through the medium of the pinion n on the huh I.- of said wheel. It follows from this that the pinion is caused to make a plurality of: revolutions incident to each revolution of the annular gear and that the said annular gear enables a rider to attain a greater speed with a less expenditure of power than by the ordinary gearing.

It will be appreciated from the hire-going that my improved gearing is very simple and light and does not add materially to the weight of a. machine. it will also be observed that it lacks delicate and complicated parts, sucli as are likely to be impaired and rendered useless by a short period of use.

\Vhen it is desirable to clean the gearing, the parts may be road by disco" nectcd by removing the gear-case from frame and turning the section 5 ol: the case oil the seetionf.

When necessary, the chain :1 may be tighinnoil or loosonoil by simply adjusting tho viiloil on its inner 51th) with a rib l',2i.l1d an near-case, tho trnvolingwvln-ol nxlo, nml tho trnvoling-wliool with respect to tho i'rzunv,

l lmvo specifically described tho construclion and relative iu'rnngonionl ol iho ]h'lliH onlhrncoil in my improved gearing in order to impart at i'nlI,i-lonr, nnil oxm'l nmlorsininlingol' tho name. Do understood. ilH confining myself to such specific construction and nrrnngvinont ol parts, as such changes or modifications mny ho nunlo in praoticv as fairly [all within tho scopo'of my invention.

Having thus \ltiiil'iiiill ni vin\'i.-i|tio:1, whni I claim is Itln notiloniro, however, to

nnnnlnr section 5/ screwed on the threaded portion oi soulionjanil having a rib i at its innor side, a, wheel-hub equipped with a. pinion 11 arranged within the flange mand having ono oi its ends loosely arranged in the opouing i of CRSU'SCCUOH f, an axle extending through tho hub and having one of its ends .iiuijnstnbly secured in the notch a of the frame-pinto, bolls screwed into the threaded apertures in the portion h of the case-section f and :nljustably secured in the slots 0 of said frame-pinto, the annular gear having the intinliyol tho ft'zlmn having the bottom line run, the roar ln'noo, and tho vvrtivnlly-(lisposed plate oonnooting said run and iii-net: and having a notch u in its war lllll nml also having horizontal slots r', n gent-ram) nnule npot' n sectionj'torinoil in one pivot.- nncl hnvprovided with an opening i nml also with scrow-thrvmloil apcrl tires, :1 mnrginnl llnngol extending laterally from tho portion l1 and having exterior tin-ends urn-tuned in the same plane as portion h, the shallow, lateral iiango H! inergingat its owls into the ilnngo I, and :1

nor rih disposed between the section (7 and tho llnngo p oi tho gear-case and provided with tooth intormeshod with those of the pin- I ion n, the outer teetlnnnd tholnteral, circuhnflanges, and nniit'riution-ballea disposed at oppositesides of the inner rih 0E thoannnlar gear nml interposed between said gear and tho rilis of tho t'itSQ, snhstnntinll) as and for the purpose set forth. ing a central, vorlicnlly-disposed portion h 1 verticallydisposed, nnnnlnr flange p proln tostinnmy whereof] have hereunto set my llillltl in presence of two sul'iscrihing witnos-son.

IRVING i= WALES A it nossos:

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